Multiple blood samples were taken and diarrhea incidents were investigated. However, they usually recover in two to three weeks. The LDME protocol consisted of three sequential intravenous inoculations, at 2-day intervals, of 10 median horse infectious doses (HID50) of the virulent challenge virus, EIAVPV (HID50 determinations were made though EIAVPV titrations in 15 horses; 1 HID50 is the equivalent of ∼0.1 TCID50). Each vaccinate was then challenged by using a low-dose multiple exposure (LDME) challenge to simulate natural exposure by horsefly bites (20). If you decide to breed from your mare, there are a number of considerations to be taken into account. Its effect on horses follows a seasonal pattern, usually between late spring and the fall during hot weather (vaccinate prior to insect hatching and warm weather). The mare’s initial maternal antibodies decline over time, subsequently leaving the foal uniquely susceptible to a variety of infectious diseases.

The murine model reproduces many aspects of infection in the natural host and provides a suitable screening system before testing promising deletion viruses in ponies. In Brooke-Spiegler syndrome, a defective tumor suppressor gene, CYLD on chromosome 16q, results in numerous cutaneous appendage tumors suggesting kinship rather than disparate lineages.46,51 The most recent hypothesis is suggestive of an abnormal multipotent stem cell in the folliculosebaceous-apocrine unit, although some reports have suggested trauma as the inciting factor.43,52 p53 expression in malignant ES is also suggestive of an underlying abnormality of tumor suppression or innate surveillance, but the significance of this observation is currently unclear. Equine rotavirus causes diarrhoea in foals, particularly where lots of foals are kept together such as large studs. At Central Equine Vets, we know that it can be an easy thing to forget, so we endeavor to send you reminders about your horse’s vaccinations. Puncture wounds on the sole of the foot are common sites of infection. Many foals are given tetanus anti-toxin shortly after birth as extra protection. At least 70% of the yard must be vaccinated for this vaccine to be effective at preventing disease.


Again through the use of our portable digital x-ray and ultrasound equipment and use of regional local anaesthetic “nerve blocks” Celtic Equine Vets can conduct thorough and indepth lameness investigations at your premises. Good yard management, in particular when dealing with potentially infected horses, is key to the control of the disease. “It is uncertain whether there are other genotypes of the virus with similar pathogentic potential,” Timoney said. This table was taken from the FEI website where more information can be found. Subunit vaccine contains one or more pure or semi-pure antigens, purified from the pathogen or produced by a baculovirus-expression systems using insect cells. The recommended primary course of vaccination is; 1st vaccination 2nd vaccination 4-6 weeks after 1st 3rd vaccination 5-6 months after 2nd. The two most common strains are EHV-1, which causes abortion, respiratory disease and paralysis, and EHV-4, which usually causes respiratory disease only but can occasionally cause abortion.

About half the owners felt comfortable sharing the expected value of the lost foals. We recommend this in any sick horse and in all more geriatric patients! It is often present on stud farms, and vaccinating the mare prior to foaling will offer immunity to the foal. Horses are quite susceptible to this potentially fatal disease, and are exposed to it through wounds and small cuts. The incubation period for equine influenza is only 1–5 days, with many horses remaining infectious for 3–6 days after the onset of clinical signs. Contaminated surfaces such as clothing, buckets, footwear and even hands can cause the spread of the disease which means that even owners with just the one animal can put their horse at risk. EHV-1 targets three organ systems in the natural host: the respiratory tract, the reproductive organs, and the central nervous system (CNS).

Booster vaccinations against flu are needed every year. In the correct conditions it can release powerful toxins which can affect the horse’s nervous system. If you notice any of these signs and think your horse may be infected with EHV call your vet immediately. We are currently investigating whether stem cells can aid tendon regeneration in horses. Horses may not compete until the 8th day after the day of vaccination. Once infected with EHV, horses become carriers of the disease. The mosquito is only infected by taking a blood meal from birds.

Regular, thorough dental work is important in maintaining your horses health and performance. Clinical signs include fever, loss of appetite, swelling of eyes, light sensitivity, ocular discharge, eye cloudiness, redness around eye, lethargy, mid-to-late-term abortion, and kidney and liver failure. As such, most horses are exposed. The BHA guidelines for influenza vaccination (which many riding orgnisations also follow) are two vaccinations 21-92 days apart and a third at 150-215days after the second, followed by boosters not more than 1 year apart.